-
公开(公告)号：US2180710A
公开(公告)日：1939-11-21
申请号：US13759937
申请日：1937-04-19
Applicant: TELEFUNKEN GMBH
Inventor： MAX KNOLL , BERNHARD BARTELS , OTTO SPENGLER
IPC: H01J29/41
CPC classification number: H01J29/41
Search Results
1
records
(took 0.01 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
